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Full Discussion: Shell scripting and ls -1 problem
Top Forums Shell Programming and Scripting Shell scripting and ls -1 problem Post 302350414 by methyl on Thursday 3rd of September 2009 06:18:18 PM
Old 09-03-2009
Quote:
#!/bin/sh
for i in 'ls-1 test'
do
sed 's/bob/manny/'g $i > $i.0
mv $i.0 $i
done
There are a variety of little bugs in this script.

1) The single quotes around 'ls-1 test' cause that whole string to be in variable $i which is what upset sed. To execute a command they need to be in backticks. Subtle but very important.
2) The second single quote in the sed line is misplaced. I think "sed" needs a "-e" switch but I don't know your O/S.
3) Though it hasn't caused an issue here you will be well advised to not call a script "test" because it is the name of a unix command.
4) There are better, more robust and POSIX-compliant methods to achieve this result.
5) "ls-1" should be "ls -1". The space character after "ls" is mandatory.

Code:
#!/bin/sh
for i in `ls -1 test`
do
      sed -e 's/bob/manny/g' $i > $i.0
      mv $i.0 $i
done

Last edited by methyl; 09-03-2009 at 09:34 PM.. Reason: grammar and correct ls -1 again
 

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LEARN ABOUT SUSE

nwbpset

NWBPSET(1)							      nwbpset								NWBPSET(1)

NAME

       nwbpset - Create a bindery property or set its value

SYNOPSIS

       nwbpset [ -h ] [ -S server ] [ -U user name ] [ -P password | -n ] [ -C ]

DESCRIPTION

       nwbpset Reads a property specification from the standard input and creates and sets the corresponding property. The format is determined by
       the output of 'nwbpvalues -c'. nwbpset will hopefully become an important part of the bindery management suite of ncpfs, together with

       As another example, look at the following command line:

	 nwbpvalues -t 1 -o supervisor -p user_defaults -c |
	 sed '2s/.*/ME/'|
	 sed '3s/.*/LOGIN_CONTROL/'|
	 nwbpset

       With this command, the property user_defaults of the user object 'supervisor' is copied into the property login_control of the user  object
       'me'.

	 nwbpvalues -t 1 -o me -p login_control -c |
	 sed '9s/.*/ff/'|
	 nwbpset

       This command disables the user object me.

       Feel free to contribute other examples!

       nwbpset looks up the file $HOME/.nwclient to find a file server, a user name and possibly a password. See nwclient(5) for more information.
       Please note that the access permissions of $HOME/.nwclient MUST be 600 for security reasons.

OPTIONS

       -h
	  -h is used to print out a short help text.

       -S server
	  server is the name of the server you want to use.

       -U user
	  user is the user name to use for login.

       -P password
	  password is the password to use for login. If neither -n nor -P are given, and the user has no open connection to  the  server,  nwbpset
	  prompts for a password.

       -n
	  -n should be given if no password is required for the login.

       -C
	  By default, passwords are converted to uppercase before they are sent to the server, because most servers require this. You can turn off
	  this conversion by -C.

AUTHORS

       nwbpset was written by Volker Lendecke. See the Changes file of ncpfs for other contributors.

nwbpset 							     8/7/1996								NWBPSET(1)
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